if you connect to the Internet by a proxy, edit the wget configuration file wgetrc in <your-wget-install-path/etc> and set the proxy address+port

wait some days… (each file is mainly raw video data of about ~3GB each file and there are 77 files)

You can use the MLS Viewer to load the .c3d files and plot graphs of the marker coordinates. I found it especially helpful to see which markers are there at all stored in the .c3d files and at which position.

Unzip all the videos

Here is a simple batch file, that - given you call it from the UMPM dataset root dir - unzips you all the videos (that are stored in .xz archives) using 7zip:

cls
for/D %%i in (*)do(
cd %%i/Video
7z e -y *
cd ../..
)

Body Model Used

There are 3 types of .c3d files provided in each GroundTruth folder:

p1_chair_2.c3d
p1_chair_2_ik.c3d
p1_chair_2_vm.c3d

The last one (_vm = virtual markers) is a set of 15 body markers, computed from the real Vicon markers that corresponds to a standard human body model.